Chemical Kinetics: JEE Main Chemistry Previous Year Questions

311 previous year questions from Chemical Kinetics. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. $A \to product (First order reaction). Three sets of experiment were performed for a reaction under similar experimental conditions: Run 1 \Rightarrow 100 mL of 1\dots$
2. $The rate constant of a reaction increases by five times on increase in temperature from 27°C to 52°C. Thevalue of activation energy in kJmol^{- 1} is ____. (Rou\dots$
3. $If 75 % of a first order reaction was completed in 90 minutes, 60 % of the same reaction would be completed in approximately (in minutes) (Take\dots$
4. $The reaction 2 A \to 2 B + C has a rate constant of 1.2 \times 10^{- 2} s^{- 1} . Which of the following is correct?$
5. $2 A \to B + C It would be a zero order reaction when$
6. $During Kinetic study of reaction 2 A + B \to C + D, the following results were obtained : A [M] B [M] initial rate of I 0.1 0.1\dots$
7. $Consider a complex reaction taking place in three steps with rate constants k_{1}, k_{2} and k_{3} respectively. The overall rate constant k is given\dots$
8. $The following data were obtained during the first order thermal decomposition of a gas A at constant volume:\dots$
9. $For a reaction A + B ⟶ P, the following data are provided Entry [A] in M [B] in M Initial rate (M / s) 1 0.02\dots$
10. $Higher order (> 3) reactions are rare due to$
11. $For the reaction, 2 H_{2} (g) + 2 NO (g) \to N_{2} (g) + 2 H_{2} O (g) the observed rate expression is, rate\dots$
12. $Calculate the amount of reactant in percent that remains after 60 minutes involved in first order reaction (k = 0.02303) minute (^{- 1}) .$
13. $Calculate half life of first order reaction if rate constant of reaction is 2.772 \times 10^{- 3} s^{- 1} .$
14. $How enzymes increases the rate of reactions$
15. $The rate of a gaseous reaction is given by the expression, k [A] [B]^{2} . If the volume of vessel is reduced to one half of the initial vol\dots$
16. $Which of the following statements is in accordance with the Arrhenius equation?$
17. $For a reaction A + B \to C + D if the concentration of A is doubled without altering the concentration of B, the rate gets doubled. If the concentration of B is in\dots$
18. $The rate law for the decomposition of hydrogen iodide is - \frac{d [ HI ]}{dt} = k [HI]^{2} . The units of rate constant\dots$
19. $For a reaction scheme A k_{1} B k_{2} C, if the rate of formation of B is set to be zero then the concentration of B is given by :$
20. $Half-life period of a first order reaction is 10 min . Starting with initial concentration 12 M, the rate after 20 min is$
21. $Which one of the following statements for the order of a reaction is incorrect?$
22. $Consider the following reaction, the rate expression of which is given below A + B \to C rate = k [A]^{1/2} [B]^{1/2} The reactio\dots$
23. $Decomposition of A is a first order reaction at T (K) and is given by A (g) ⟶ B (g) + C (g) . In a closed 1 L\dots$
24. $3 A ⟶ 2 B, rate of reaction, + \frac{d [ B ]}{dt} is equal$
25. $The decomposition of formic acid on gold surface follows first order kinetics. If the rate constant at 300 K is 1.0 \times 10^{- 3} s^{- 1} and the activation energy\dots$

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Chemical Kinetics: JEE Main Chemistry Previous Year Questions

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